Provisional — subject to revision

Central Harlem, New York

Legionnaires’ disease outbreak · Jul-Aug 2025 · New York

114
Cases: 7
Deaths: Closed
Status

Suspected source

Cooling towers at Harlem Hospital and nearby construction site (Cooling tower)

What happened

NYC's largest 2025 outbreak. Cooling towers at NYC Health + Hospitals/Harlem and a construction site at 40 West 137th Street were identified as sources.

Affected ZIP codes

10027, 10030, 10035, 10037, 10039

Sources & coverage

In-depth reporting on this and other Legionnaires’ disease outbreaks is available from Pritzker Hageman’s Legionnaires’ disease resource center.

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Primary source: Cooling towers at Harlem Hospital and nearby construction site. Figures are provisional and may be revised or withdrawn by the reporting authority. This page is for information only and is not medical or legal advice.

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